Improvement in saw-swage



EMANUEL ANDREWS, OF WILLIAMSPORT, PENNSYLVANIA.

Letters Patent No. 95,869, (lated October 19', 1869.

IMPROVEMENT IN SAW-SWAGE.

The Schedule referred to in these Letters Patent and making part of the same.

To all ywhom it may concernr Beit known that I, EMANUEL ANDREWS, of Williamsport, in the county of Lycoming, and State of Pennsylvania, have invented a new and useful Improvement for Swaging Saw-Teeth; andI do declare that the following is a true and accurate description thereof, reference being had to the accompanying drawings, and to the letters of referencethereou, and being a part of this specification, in which-'- Figure 1 is an elevation of the swage-frame, with saw in position.

Figure 2 is an outline sketch of the said swage.

Figures 3 and 4 are front views of a saw-tooth, swaged on one or both sides. Y

' This device is intended to avoid the objectionable results of swages in use, which either compress the saw-tooth in sucha way as injures the metal, or widens it upon the back, giving it a tendency to bind or adhere to the wood, in its passage through it.

This invention proposes to swage a saw-tooth whose back rests against an adjustable hexagonal anvil, by means of blows of a hammer upon a saw-swage of peculiar construction, which rests upon the front of said tooth, whereby it is made broader at the point and sharper at its cutting-edges.

A more particular description of this device is as follows, viz:

To the upper corners of a suitable frame is fastened solidly a square plate of cast-iron, with a semi-hexagonal opening in the lower inner corner of it, making a portion of a hexagonal opening through said frame. In this opening a steel hexagonal anvil is placed, which ts tightly, and projecting slightly' at the front, presects one of its sides so as to coincide with the back of a saw-tooth.

This anvil A is fastened in place by a wedge upon the back of the frame, and may be taken ont and replaced so as to present in turns all of its faces to thc backs of the saw-teeth.

Two vertical screws E E, going up from the bottom of the frame, carry the supports D D, upon which the saw B rests, and hold it in position between said supports and the anvil A.

The smv-swage C, which is made to be held in the hand when in use, is made of steel, round at the handle, and flattened at the swaging-end, which has an oti'set on the lower part of it. This swagingend has all of its angles obtuse, and all of its lines straight, so that its various sides may be used in swaging.

In operation, the saw is placed upon the supports D D, upon its back, and raised up by means of the screws E E, until the back of one of the teeth is pressed against the outer face of the anvil A, and it is held there firmly.

The operator takes the saw-swage C in his hand, and places one ofthe faces of it against the front of a saw-tooth, and strikes it with a hammer until the tooth is sufficiently swaged.

If it is desired to swage the tooth more on one side than on the other, as in fig. 4, it is first filed to abevel, and in that case the tooth will be swaged to the side where it is filed the least. Ordinarily it will be swaged on both sides equally; as inflg. 3.

What I claim as my invention, and desire to secure by Letters Patent, is-

The adjustable hexagonal anvil A, constructed and opcratinguas described, and for the purpose aforesaid.

Also, the saw-swage C, constructed and operating as above shown, and for the purpose above set forth.

Also, the combination, arrangement, and employment of the saw-swage C, adjustable hexagonal anvil A, screws E E, and supports D D, in connection with a suitable frame, when constructed and operating as above mentioned.

EMANUEL ANDREWS.

Witnesses:

WILLIAM W. BARR, GEORGE F. SMITH. 

